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02-13-04, 11:11 AM
| | Member | | Join Date: February 2004
Posts: 18
| | | Hp Difference Between Hi Flo Cats And No Cats?
I was wondering if anyone has actually tested HP difference between X or H pipes with hi flo cats versus off road pipes with no cats. I have a 98 Cobra and was wondering if the swapping for emissions testing is the worth the exta Hp you get from a pipe with no cats or having one with cats that can stay on all the time..
Last edited by 98sqstang; 02-13-04 at 02:53 PM.
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02-13-04, 12:07 PM
|  | Official Member | | Join Date: February 2003
Posts: 830
| | | yeah
probably a 10 hp differnce.. |
02-13-04, 12:16 PM
|  | Stay thirsty my friends | | Join Date: December 2001 Location: SN Moderator: Orlando, Fl.
Posts: 5,888
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I would think even less with good hi-flows. Maybe 5. |
02-13-04, 12:32 PM
| | Founding Member | | Join Date: March 2002 Location: Sugar Land TX(Houston Area)
Posts: 195
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I wouldnt even try hi flow cats. First of all they are like $400 a piece. My H-pipe shipped to my door was like $130. Smells like a motor boat, and have to go to the south side of town for inspection, but hey, why pay more for less? |
02-13-04, 01:13 PM
|  | Official Member | | Join Date: April 2003 Location: NJ
Posts: 2,281
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i thought the same thing pay less and get more hp. however im switching back to a pipe with cats because of the smell and mostly the cops here in nj, i get pulled over too much. so i ts winding costing me alot more to do it this way. i dont think it will be that much different prob. 5 hp. |
02-13-04, 01:51 PM
| | Official Member | | Join Date: October 2003 Location: Palm Harbor, FL
Posts: 370
| | Quote: |
Originally Posted by DavidCroft I wouldnt even try hi flow cats. First of all they are like $400 a piece. My H-pipe shipped to my door was like $130. Smells like a motor boat, and have to go to the south side of town for inspection, but hey, why pay more for less? | the carsound (magnaflow) cats sell for 31.50 each on ebay |
02-13-04, 02:10 PM
|  | Founding Member | | Join Date: June 2001 Location: Seattle
Posts: 1,329
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It depends on your modifications. The more radical your engine combo, the more restrictive the cats become. As for bolt-on or mostly stock, the difference is truly negligable, from what I've read. Oh and make your own; hi-flow cats are cheap on ebay, as millatime pointed out.
Jon |
02-13-04, 02:36 PM
| | Member | | Join Date: August 2003 Location: osan ab, south korea
Posts: 31
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I have the bbk x-pipe with high flows (gutted). the only difference i felt before gutting (due to broken stone thingy inside cat) and after was that the car seemed to pull a little harder on the interstate at 80mph in 5th after gutting them.
edit: also after is quite a bit louder
Last edited by AMMOstang; 02-13-04 at 02:39 PM.
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02-13-04, 02:52 PM
|  | "the 5.0 owns all" | | Join Date: August 2002 Location: Arkansas
Posts: 9,483
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I lost a tenth with the addition of the Prochamber...
David |
02-13-04, 04:28 PM
| | Official Member | | Join Date: April 2003 Location: NJ
Posts: 2,281
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the prochamber has no cats, right? how did you loose a tenth? |
02-13-04, 06:22 PM
|  | Founding Member | | Join Date: January 2002 Location: SOCAL, but originally NORCAL
Posts: 2,834
| | Quote: |
Originally Posted by DavidCroft I wouldnt even try hi flow cats. First of all they are like $400 a piece. My H-pipe shipped to my door was like $130. Smells like a motor boat, and have to go to the south side of town for inspection, but hey, why pay more for less? | My x pipe has 2 highflow cats and was shipped to my door for 379.. high flow cats are not 400 a piece.. www.magnaflow.com you can order carsound high flow cats
-wade |
02-13-04, 07:28 PM
| | "the 5.0 owns all" | | Join Date: August 2002 Location: Arkansas
Posts: 9,483
| | Quote: |
Originally Posted by ADRENLN the prochamber has no cats, right? how did you loose a tenth? | I lost a tenth from my time (13.9 to 13.8 for EX)...yes there is no cats... | | Thread Tools | | | | Display Modes |  Linear Mode | 
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